Method of manufacturing a cellulose viscose collapsible tube



J y 1935- ALB. BLOUNT 2,008,4M

METHOD OF MANUFACTURING. A GELLULOSE'VISCOSE COLLAPSIBLE TUBE 7 Filed Dec. 5, 1952 3 Sheets-Sheet 1 ATTORNEY:

July 16, 1935, A. B. BLOUN-T METHOD OF MANUFACTURING}. CELLULOSE VISCOSE COLLAPSIBLE TUBE Filed Dec. 5, 1932 3 Sheets-Sheet 2 Arzimrfijzamt INVENTOR ATTOR N EYS Y 9 i935. A. B. BLOUNT 2,008,487

METHOD OF MANUFACTURING A CELLULOSE VISCOSE OOLLAPSIBLE TUBE Filed Dec. 5, 1932 5 Sheets-Sheet 5 INVENTOR Patented July 16, 1935 UNl-TED STATES METHOD OF MANUFACTURING A CELLU- LOSE VISCOSE COLLAPSIBLEI Arthur B. Blount, St. Louis, Mo. Application December 5, 1932, Serial No.645, 835

2 Claims. ((ll. 1858) The invention relates to a method of making a cellulose viscose collapsible tube. The primary object of the invention is the provision of a tube of this character wherein the threaded nipple end for the adaptation of'a cap thereon and the body of such tube are unitary and made entirely from cellulose viscose now commonly termed cellophane, so that a. transparent non-soluble container used to distribute commodities of liquid or semi-liquid form is had, whereby the contents can be seen and sanitation in the handling thereof assured, as the container within this mold, then said mold is drawn upon causing it to be followed by a cylindrical film of the celluloseviscose and under this drawing action a tube formation thereof is had to produce the body. of the tube and this tube formation-is submerged in a coagulating solution for the setting thereof and likewise the interior of the tube is subjected to a filling of coagulating solution while being introduced into a bath thereof so as toprevent the collapsing of the tube formation during the drawing of the saine,'whereupon after the release of the formation the same is chemically treated and dried for production of the finished product ready to receive its contents.

. I A still further object of the invention is the provision of a machine. of this character, wherein a collapsible tube is produced in a single operation thereof, the machine being provided with valved ways, one intimate with the mold for the formation of the threaded nipple end of the collapsible tube and the feeding of cellulose viscose in a film fashion for the formation of'the body of the tube, while the other valved Way admits a fixing medium so that the tube formation may be set and under successive operation of the ma.-

chine a cellulose viscose collapsible tube is-produced, the body thereof being effected by a drying action upon the cellulose viscose as introduced into the machine, the valves for .the ways being automatically controlled and successively timed in a novel manner. i

. Other objects will be in part obvious and in part hereinafter pointed out.

The invention accordingly consists in thelfeathereto a supply pipe I 9 adapted to deliver cellutures' of construction, combination and arrangement of parts as will be hereinafter more fully pended.

drawings. I

able manner and has formed at its'upper end a.

described illustrated in the accompanying drawings and pointed out in the claims hereunto ap- In the accompanying drawings:

Figure l is aQfragmentary side elevation of a machine constructed in accordance with the invention for the manufacture of cellophane collapsible tubes and the same being partly in section with its parts in normal starting position.

Figure 2 is a vertical transverse sectional view thereof. I V

Figure 3 is a view similar to Figure 2 showing the parts of the machine in the position when a cellophane collapsible tube has been produced or finished. a l

. Figure 4 is a top plan view of the machine.

Figure 5 is a fragmentary transverse sectional view taken approximately on the line 55 of Figure 2. I l

Figure 6 isa fragmentary transverse sectional view taken approximately on the line 66 of Figure 2. 1

Figure 7;is an enlarged detail fragmentary sectional view through the nozzle end forming mold for the tube.-

Figure 8 is a view similar to Figure '7 but taken at right angles thereto.

Figure 9 is a perspective View of the tube as produced by the machine and under the process of a perspective view of the finished Referring to the drawings in detail, A designates generally a portion of the stand of the machine which may be of any desirable shape and of the required height, itbeing supported in any suit- 40 tank-like casing .lfl forming a container for a suitable coagulating solution I I, the level of which is maintained byan overfiow 12, its outlet l3 leading to 'a drainpipe 14' extending downwardly one side thereof is a housing l6 having formed interiorly thereof the upper and lower chambers ll andv lfl respectively, the latter having leading lose viscose-into the chamber Bpwhile leading into the chamber llis'a supply pipe for delivering thereto a coagulating solution, these pipes receiving their supply from any suitable source.

Vertically movable in the tank I0 is a mold head 2|, the same beingformed on a stem 22 slidably fitted in a guide 23 formed at the bottom of said tank iii and having a'packing gland 24'surrounding said stem 22 so astoavoid leakage about the same through the guide 23. The stem 22 is centrally fixed in a crosshead 25 having fitted in opposite ends push rods 26, the same at the fitting with the crosshead 25 being arranged with cushioning said rods 26 are coiled tensioning springs/30 which function to maintain the push rods 26 in contact with actuator cams 3| carried by andmovable with a power shaft 32 journaled transversely in bearingsSB formed on a plunger barrel 34 rising i'fro'm thehousing. IS, the power shaft 32 being 'pansion spring 55 and likewise the valve 55 is urged to its seat 54 by a coiled expansion sprin'g Q 5l. The valve 4| is lifted from its seat by'a rocking lifting lever 58 pivoted at 59 and actuated "65 fitted with a power pulley wheel' 35 which'is equipped with a handle 36 eccentrically arranged thereon. Thus the wheel 35 can be driven from a belt'operated from any suitable sour'celnot QW or by hand on the turning of th' h n m .38 asshould be obvious. a Y

Disposed vertically through the chamber i8 is a drawing column or cylinder 3Thavin'g 'a'flanged upper end 33 countersunk at 39 in the bottom of the upper chamber This flanged upper end 38 has a valve seat 4|! for accommodating a slide valve 4| surrounding and movable upon a shank extension 4.! of a plunger 43 working within the barrel 34 through a packing gland 44 at the upper .end of said, barrel. The plunger 43 is mounted centrally. of a crosshead 45 having journaled thereon at opposite ends rollers 46, these movable upon cams 41 carried by and movable withthe I power shaft 32. The crosshead 45 ha'sconne'cted therewith a coiled tensioning spring 48; the same being also connected at 49 with the tank llL'the spring being extended through a suitable housing 53 depending from the 'crosshead45'and slidable in a guide 5| formed on the barrel '34at one side thereof. The housing 50 is of less length than the be obvious from Figure l of the drawings. The forming column or cylinder 31 opens through a stationary head 52 formed at the bottom of the chamber it into the tank Ill. The stationary head 7 52 receives thermold head 2| to cover thesame cally of the columnor cylinder 31 is formed with an'oriiice 53 and this orifice has a valve seat 54 for a'slide valve 55 movably mounted upon the column'or cylinder 31. v e

a The valve 4| is'urged to its seat 40intheupper end of the column or cylinder 3|;by a coiled exby a push rod movably fittedin a guide fili and {operated uponby a cam 62 carried by andmovable 'with the power shaft 32. Likewisethe' valve 55 is lifted fromits seat54 by a rockinglift'lever 53 pivoted at $4 and operated upon by a push rod 6 5 movably fitted in a guide 66, the rodbeing actuated by a" cam 51 carried by and movablewith the power shaft 32. The push rods 50 and 65operate throughsuitable packing glands as the 'liquidsin the chambers are under pressure and this avoids leakage about the said push rods. 1'

fmentioned'.

The lower end of the column or cylinder 31 is formed with a valve seat 68 for accommodating a valve 69 formed on the shank extension 42 of the plunger 43. The valve 69 has formed therewith a die 10 for fitting with the mold head when engaged in the head 52 so that when the orifice 53 is opened by the lifting of the valve 55 the viscose within the chamber |8 will flow into the moldhead2| for the formation of the end of a collapsible tube, it being understood of course that the valve 69 at this. moment is engaging its seat 68 in the column or cylinder 31, thereby shutting off the flow of coagulating solution from the Connected with,

chamber through the column or cylinder 31 as will be apparent in Figure 2 of the drawings. The mold head 2| has centrally formed therein .a central opening ll communicative with threadtherewith a coiled tensioning spring l5 which urges the jaws 12 toward each other while the 'freeends 16' of such levers 13 are adaptedfor engagement with a shoulder 11 which effects the spreading apart of the jaws [2 on the down stroke It will be apparent chamber i3 will flow through the orifice 53 into the mold head 2| and into the jaws 12 so that the engaged in the stationary head 52 when the stem ;'22 has been raised to its uppermost stroke under externally threaded nipple end 18 of a collapsible time will be formed. The mold head 2| will be;

the action of the cams 3| cooperating with the push rods 26 on the crosshead 25.

Arranged within the'mold head 2| is an ejector pinjlS having-an actuator 80 adapted to coact with the shoulder 11 on the down strokeof the stem 22 so as to free the nipple end l8from the mold, The pin l'flfnormally or ,when the'stem 22.ofthe mold head 2| islifted becomes receded I and is passive against ejecting action, it moving flto ejecting position by the actuator. 8|] thereof spring 4!} and reciprocates in the guide 5| 'as will contacting with the shoulder 11 as heretofore When the nipple end 18 has been formed in the mold 2| the latter is caused to move away from the head 52 and instantly therewith a tubular formation or film 8| of cellulose'viscose is drawn through the orifice 53 about-the column or cyl- I'ind er 31 and the valves 4| and 59 are opened so 55 that a charge of. coagulating fluid willflow from .the'chamber through the column or cylinder 31 into the tubular formation or film so as to prevent the collapsing thereof during this rdrawe the drawings. When the mold head 2| reaches its'lowerrnost extent of down stroke the levers 13 will be acted upon at their ends-l6 to separate the jaws|2, these being spreadcompletely before 11 incontai n er i0, thus spreading theejector I9 upward. The ejector pin 19 will eject the end 18 of the tube 8| into the bath of coagulating solution H in the tank In whence the said. tube 8| canfbe removed therefrom in any approved manher, the upper end of said tank l0 being open for a major portion of the same for this purpose. The

the actuator 80 strikes the flat surface of shoulder die head 10 has a tip 83 which remains in contact with ejector pin 19 in mold head 2| throughout the greater part of the downward stroke of mold head 2|. of forming the opening in nipple end of tube. When the die head 1!] and mold head 2| reach a point on the downward stroke where the thread forming jaws l2 begin to open, the die head 10 returns very speedily to a position of about closing asis shown in Figure 3 of the drawings, thus clearing tube of all obstruction for the ejection process.

When the tube 8| has been removed from the bath of the coagulating solution I l in the tank I0 the open bottom end of such tube is sealed by the formation of an overlapped clinched sealing seam 82 as is common to collapsible lead tubes,

I the sealing of this end being shown in Figure 10 of the drawings and thus a finished product had.

The bath of coagulation fluid I I in the tank l0 serves to set the tubular film when being drawn by the down stroke of the mold head 2|, while the coagulation fluid from the chamber H, which is fed into the tubular film, prevents the collapsing of the tubular formation of the film during the drawing of the body of the cellophane collapsible tube in the operation of the machine.

It should be apparent that a collapsible container tube made from cellophane with a threaded nipple end is produced in a single operation of the machine by the drawing of cellulose viscose from a chamber containing the same and in the use of a mold head movable through a bath of a coagulation fluid or or solution as contained in the tank I0 of the machine.

The cams as employed in the machine for controlling the mold head 2| and valves 4!, and

This die head tip 83 also is the means 69 are timed for the successive operations thereof to efiect the production of a cellophane collapsible tube. However, it, is to be understood that the mold section 2] and the valves are susceptible of being operated otherwise than by cams and this is contemplated within the scope of the invention.

What is claimed is:

1. The method of making cellulose viscose tubes consisting in subjecting cellulose viscose to a mold head, confronting the head with oppositely movable nipple forming jaws, maintaining the mold head coated with a coagulating solution, drawing out the cellulose viscose by a downward movement of the mold head and jaws into a coagulating solution to form a thin-walled seam less tube, supporting the tube during the drawing and extruding action and maintaining treatment of the coagulating solution to the interior and exterior of the tube during the drawing and extruding period.

2. The method of making cellulose viscose tubes consisting in subjecting cellulose viscose to a mold head, confronting the head withoppositely movable nipple forming jaws, maintaining'the mold head coated with a coagulating solution, drawing out the cellulose viscose by a downward movement of the mold head and jaws into a coagulating solution to form a thin-walled seamless tube, supporting the tube during the drawing and extruding action and maintaining treatment of the coagulating solution to the interior and exterior of the tube during the drawing and. extruding period and releasing the said jaws at the termination of the drawing and extruding action.

ARTHUR B. BLOUNT. 

